Jordan : Is the Fujifilm GFX 100 good for video? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 8 Old 08-06-2019, 07:17 AM - Thread Starter
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Jordan : Is the Fujifilm GFX 100 good for video?

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Would you use a medium format camera for video? In this week's episode, Jordan explains why he's pleasantly surprised – even impressed – with the video capabilities of Fujifilm's 100MP medium format camera.
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post #2 of 8 Old 08-07-2019, 02:38 PM - Thread Starter
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Fujifilm GFX 100 review

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Like the X-T3, the GFX 100 can capture 10-bit footage internally, if set to use the H.265 codec and will output a 10-bit 4:2:2 signal over HDMI. These are impressive specs by any standard.


It can take full advantage of its ability to capture and output 10-bit footage by offering a choice of Fujifilm's own F-Log response, designed to give flexibility for color grading or the ready-to-use (on compatible TVs) Hybrid Log Gamma profile. If you don't intend to get too involved in color grading, there's also the subtle and attractive 'Eterna' Film Simulation, which can be used as-is, but still gives some flexibility for adjustments.


The camera lets you separately select the resolution and color mode captured internally and output over HDMI. You can record and output at different resolutions or record and output different color modes, but you can't simultaneously get processed (Film Simulation) color and F-Log at more than one resolutions.
https://www.dpreview.com/reviews/fuj...x-100-review/7


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post #3 of 8 Old 08-10-2019, 08:10 PM
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In the opening shots Jordan's face is overexposed and blown out. In later shots, his skin tones are overexposed and his eyes are underexposed. I'm not sure if that's an exposure problem, a lighting problem, or merely a lack of dynamic range in the video. Regardless it looks bad, much worse than the video they consistently get out of the GH5 and GH5s. I wouldn't be happy with that look in video after dropping $10k on a medium format body plus thousands on lenses to achieve amazing stills.
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post #4 of 8 Old 08-11-2019, 03:26 PM
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Originally Posted by hatchback View Post
In the opening shots Jordan's face is overexposed and blown out. In later shots, his skin tones are overexposed and his eyes are underexposed. I'm not sure if that's an exposure problem, a lighting problem, or merely a lack of dynamic range in the video. Regardless it looks bad, much worse than the video they consistently get out of the GH5 and GH5s. I wouldn't be happy with that look in video after dropping $10k on a medium format body plus thousands on lenses to achieve amazing stills.
I don't know why they chose to shoot at noon without diffusion, or why they shot a guy at 3:40 from a shade into a brightly-lit city scene, maybe they wanted to show how the camera handles rough lightning, and maybe if you know that other cameras do worse in these situations you will appreciate what this one does. But for a casual viewer, I agree, these shots do not look overly spectacular.

Oh, AF is so-so, and there is no 4K60.
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post #5 of 8 Old 08-12-2019, 04:26 AM
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The other video from Cinema 5D looks good except for the color but that is probably due to the grading not the camera. Not sure if splurging upwards of $10K for a camera and lenses plus the hefty weight with the main focus on 4K footage would be worth it in light of the availability of excellent but cheaper and lighter hybrid video cameras such as the new Sony A7RIV or the Panasonic GH5/GH5S. The stills, however, must be superior otherwise the whole system would be useless.
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post #6 of 8 Old 08-12-2019, 01:41 PM
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Does it do a crop? (if so, then it at best is no better than FF cameras).

100 mpixels is a lot of data to be processed if it is using the full sensor. There are going to be significant compromises, you are far better off using a lower resolution sensor for video. For 4K the practical optimum in a video centric camera is 1.2x to 1.5x the nominal pixel count. That would allow you to maintain most of your resolution after debeyering without sacrificing too much bandwidth that otherwise could be used for things like higher frame rates or larger bit depths.
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post #7 of 8 Old 08-12-2019, 03:20 PM
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Quote:
Originally Posted by Tugela View Post
Does it do a crop? (if so, then it at best is no better than FF cameras).

100 mpixels is a lot of data to be processed if it is using the full sensor. There are going to be significant compromises, you are far better off using a lower resolution sensor for video. For 4K the practical optimum in a video centric camera is 1.2x to 1.5x the nominal pixel count. That would allow you to maintain most of your resolution after debeyering without sacrificing too much bandwidth that otherwise could be used for things like higher frame rates or larger bit depths.
It uses line skipping and pixel binning - no oversampling.
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post #8 of 8 Old 08-14-2019, 01:05 PM
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Originally Posted by markr041 View Post
It uses line skipping and pixel binning - no oversampling.
And we all know that historically that line skipping results in crap video.
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